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Issue 45, 2015
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Defective ZnFe2O4 nanorods with oxygen vacancy for photoelectrochemical water splitting

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Abstract

A one-dimensional zinc ferrite (ZnFe2O4) nanorod photoanode was prepared by a simple solution method on the F-doped tin oxide glass substrate. Thermal treatment under a hydrogen or vacuum atmosphere improved the photoelectrochemical water oxidation activity up to 20 times. The various physical characterization techniques used revealed that oxygen vacancies were created by the treatments in the near surface region, which increased the donor density and passivated the surface states. Hydrogen treatment was more effective and it was important to find optimum treatment conditions to take advantage of the positive role of oxygen vacancy as a source of electron donors and avoid its negative effect as electron trap sites.

Graphical abstract: Defective ZnFe2O4 nanorods with oxygen vacancy for photoelectrochemical water splitting

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Supplementary files

Article information


Submitted
26 Aug 2015
Accepted
21 Oct 2015
First published
22 Oct 2015

Nanoscale, 2015,7, 19144-19151
Article type
Paper
Author version available

Defective ZnFe2O4 nanorods with oxygen vacancy for photoelectrochemical water splitting

J. H. Kim, Y. J. Jang, J. H. Kim, J. Jang, S. H. Choi and J. S. Lee, Nanoscale, 2015, 7, 19144
DOI: 10.1039/C5NR05812K

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